In geometry, the trigyrate rhombicosidodecahedron is one of the Johnson solids (). It contains 20 triangles, 30 squares and 12 pentagons. It is also a canonical polyhedron.
It can be constructed as a rhombicosidodecahedron with three pentagonal cupolae rotated through 36 degrees. Related Johnson solids are: The gyrate rhombicosidodecahedron () where one cupola is rotated; The parabigyrate rhombicosidodecahedron () where two opposing cupolae are rotated; And the metabigyrate rhombicosidodecahedron () where two non-opposing cupolae are rotated.
References
The first proof that there are only 92 Johnson solids.
External links